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1220 American Way Libertyville, IL 60048
Phone:
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BSOLUTE
ROCESS NSTRUMENTS, Inc.
© 11-16
Removable Plugs
Dimensions
1.78" W x 4.62" H x 4.81" D
45 mm W x 117 mm H x 122 mm D
Height includes connectors
Sink or Source
mA Output for
Each Channel
Output LoopTracker
LED for Each
Channel
Adjustable Output
Test Function for
Each Channel
Zero and Span for
Each Channel
Built-in Excitation
Voltage for Strain Gauge
Sensor Input Power
Available for Frequency
Custom I/O Ranges
Description
The APD 2057 DuoPak accepts one strain gauge input and one
frequency input and provides two optically isolated DC voltage
or current outputs that are linearly related to the inputs.
The input ranges and the output ranges for each channel are
independent and can be specified as required. This provides an
economical two channel solution in one device.
Typical applications include signal conversion, isolation, and
redundancy (i.e. to prevent failure of the entire loop if one
device fails), or a combination of these.
Each input signal is filtered, amplified, and then passed
through an opto-coupler to the output stages. Full 5-way
isolation (input 1, input 2, output 1, output 2, power) make
this module useful for ground loop elimination, common mode
signal rejection, and noise pickup reduction.
Output Sink/Source Versatility
Standard on the APD 2057 are 20 VDC loop excitation sup-
plies for each output channel. These power supplies can be
selectively wired for sinking or sourcing allowing use with any
combination of powered or unpowered milliamp I/O devices.
LoopTracker
API exclusive features include four LoopTracker LEDs (green
for each input, red for each output) that vary in intensity with
changes in the process input and output signals.
These provide a quick visual picture of your process loop at all
times and can greatly aid in saving time during initial startup
and troubleshooting.
Output Test
An API exclusive feature includes output test buttons for each
channel to provide a fixed output (independent of the input)
when held depressed.
Terminals are also provided to operate the test functions
remotely for each channel. This also allows use as a remote
manual override to provide a temporary fixed output if desired.
The test output level for each channel is potentiometer adjust-
able from 0 to 100% of the output span. The output test greatly
aids in saving time during initial startup and/or troubleshooting.
Universal
Power
Input LoopTracker
LED for Each
Channel
®
Two Channel Signal Converter/Isolator/Transmitter
APD 2057
Channel 1: Bridge/Strain Gauge/Load Cell to DC
O
Two Independent Channels with Full Isolation
O
Zero and Span for Each Output
O
Input and Output LoopTracker
®
LEDs
O
Output Test/Manual Override for Each Channel
O
Built-In I/O Power Supplies
Q
Monitor Weight or Pressure and Speed
Q
Convert/Isolate Dual Output Transmitters
Applications
Channel 1 Bridge Input Range
Factory configured, please specify sensor mV/V and mV range
Sensor range:
0-1 mV to 0-2000 mV
Millivolt output range is determined by the sensitivity of the
sensor (mV/V) and the excitation voltage applied.
mV/V sensitivity X excitation voltage = total mV range
Input impedance:
1 M
Ω
minimum
Input com. mode rejection: 100 dB minimum
Channel 1 Excitation Voltage
Range:
4 to 10 VDC factory set, please specify
Adjustment:
±10% via front potentiometer
Maximum output: 10 VDC maximum at 30 mA
Stability:
±0.01% per °C
Designed for one 350
Ω
(or greater) sensor
Channel 2 Frequency Input Range
Factory configured, please specify input range
Frequency:
0-25 Hz to 0-20 kHz
Any waveform with 5 microsecond min. pulse, 100 mV min.
amplitude change, 100 mV to 150 V
RMS
amplitude
Channel 2 Sensor Power Supply
15 VDC ±10%, regulated, 25 mADC, <10 mV
RMS
max. ripple
Channel 2 Characteristics
Impedance at max. sensitivity:
10 k
Ω
nom.
Impedance at min. sensitivity:
100 k
Ω
nom.
Sensitivity/hysteresis adjustment: Multi-turn potentiometer
Sensitivity/hysteresis range:
±25 mV to ±2.5 V typical
Normal mode protection:
200% of input rating
Common mode protection:
600 V input to ground
LoopTracker
Variable brightness LEDs indicate I/O levels for each channel
Channel 1 and Channel 2 Output Ranges
Factory configured, please specify for each output channel
Voltage:
0-1 VDC to 0-10 VDC, 10 mA max
up to 20 VDC with M19, M29, M39
Bipolar voltage: ±1 VDC to ±10 VDC
Current:
0-1 mADC to 0-25 mADC, 4-20 mADC
20 V compliance, 1000
Ω
at 20 mA
Output Calibration
Multi-turn zero and span potentiometers for each output channel
±15% of span adjustment range typical
Characteristics
Accuracy: ±0.1% of span (incl. adj. resolution and linearity)
Output ripple and noise:
Less than 10 mV
RMS
Isolation:
Full 5-way, 1200 V
RMS
minimum
Response Time
70 milliseconds typical
Ambient Temperature Range and Stability
–10°C to +60°C ambient, better than 0.04% span/°C stability
Output Loop Power Supplies
20 VDC nominal, regulated, 25 mADC for each output channel
May be selectively wired for sinking or sourcing mA output
Output Test
Front buttons set each output to test level when pressed
Each test level potentiometer adjustable 0-100% of span
Housing and Connectors
IP 40, requires installation in panel or enclosure
For use in Pollution Degree 2 Environment
Mount vertically to a 35 mm DIN rail
Eight 4-terminal removable connectors, 14 AWG max wire size
Power
85-265 VAC, 50/60 Hz or 60-300 VDC, 6 W maximum
D versions: 9-30 VDC or 10-32 VAC 50/60 Hz, 6 W maximum
Channel 2: Frequency to DC
Options—add to end of model number
R1
Channel 1 I/O reversal (i.e. 20-4 mA out)
R2
Channel 2 I/O reversal (i.e. 20-4 mA out)
R3
Channel 1 and channel 2 I/O reversal
M19
Channel 1 high voltage output >10 V up to 20 V
M29
Channel 2 high voltage output >10 V up to 20 V
M39
Channel 1 and channel 2 high voltage output
U
Conformal coating for moisture resistance
Accessory—order as separate line item
API BP4
Spare removable 4 terminal plug, black
How to Order
Models are factory ranged. See I/O ranges above left.
Ranges and options for each channel must be specified on order
Channel 1 input range, excitation voltage
Channel 2 input range
Channel 1 output range
Channel 2 output range
Model
Description
Power
APD 2057
DuoPak 2 channel
Strain-DC, Freq.-DC
converter/isolator/
transmitter
85-265 VAC, 50/60 Hz or
60-300 VDC
APD 2057 D
9-30 VDC or 10-32 VAC
Options and Accessories
Quick Link
api-usa.com/2000
Free Factory
I/O Setup!
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Made in USA
File E145968
85-265 VAC, 60-300 VDC
model only
